In an attempt to actually say, hey, we're no longer going to support our older models, Nintendo is going to close down its Wi-Fi services for the Wii and DS across the globe.

Any Wii or DS games that you used to play online will no longer be able to do so, such as Mario Kart Wii and Smash Bros. Brawl. However, you can still access the Wii Shop and DSi Shops via your devices, because Nintendo is never going to turn down your money.

If you're curious about all this will effect, Nintendo has the list handy here.